#пример ответа JSON GA API v4

{"reports": [
    {
      "columnHeader": {
        "metricHeader": {
          "metricHeaderEntries": [
            {
              "name": "ga:users",
              "type": "INTEGER"
            }
          ]
        }
      },
      "data": {
        "rows": [
          {
            "metrics": [
              {"values": ["54"]}
            ]
          }
        ],
        "totals": [{"values": ["54"]}],
        "minimums": [{"values": ["54"]}],
        "maximums": [{"values": ["54"]}],
        "rowCount": 1,
      }
    }
]}